Daidalos

modules/hosts/daidalos/configuration.nix

@@ -0,0 +1,80 @@
+{
+  lib,
+  pkgs,
+  nixosModules,
+  ...
+}:
+let
+  userName = "root";
+  hostName = "Daidalos";
+  installDisk = "/dev/disk/by-id/REPLACE_ME";
+in
+{
+  _module.args = {
+    inherit
+      userName
+      hostName
+      installDisk
+      ;
+  };
+
+  imports = [
+    ./disko.nix
+    ./hardware.nix
+    nixosModules.base
+    nixosModules.binBashWrapper
+  ];
+
+  my.binBashWrapper.enable = true;
+
+  boot = {
+    kernelPackages = pkgs.linuxPackages_rpi4;
+    supportedFilesystems = [ "zfs" ];
+    zfs.devNodes = "/dev/disk/by-id";
+    extraModprobeConfig = ''
+      options zfs zfs_arc_min=67108864
+      options zfs zfs_arc_max=134217728
+    '';
+    loader = {
+      grub.enable = lib.mkForce false;
+      systemd-boot.enable = lib.mkForce false;
+      generic-extlinux-compatible.enable = true;
+    };
+  };
+
+  services.zfs = {
+    autoScrub.enable = true;
+    trim.enable = false;
+    autoSnapshot.enable = false;
+  };
+
+  services.fstrim.enable = false;
+
+  hardware.enableRedistributableFirmware = true;
+  hardware.deviceTree = {
+    enable = true;
+    filter = "*rpi-4-*.dtb";
+  };
+
+  environment.systemPackages = with pkgs; [
+    libraspberrypi
+    raspberrypi-eeprom
+  ];
+
+  networking.hostName = hostName;
+  networking.hostId = "69aaeea1";
+
+  systemd.network.networks."10-wired".matchConfig.Name = lib.mkForce [
+    "en*"
+    "eth*"
+    "end0"
+  ];
+
+  zramSwap = {
+    enable = true;
+    memoryPercent = 50;
+    algorithm = "zstd";
+  };
+
+  system.stateVersion = "25.05";
+}

modules/hosts/daidalos/default.nix

@@ -0,0 +1,20 @@
+{
+  inputs,
+  mkHost,
+  nixosModules,
+  ...
+}:
+let
+  host = mkHost {
+    nixpkgs = inputs.nixpkgs-stable;
+    disko = inputs.disko-stable;
+    lolcat = inputs."lolcat++-stable";
+    system = "aarch64-linux";
+    inherit nixosModules;
+    hostModules = [ ./configuration.nix ];
+  };
+in
+{
+  Daidalos = host;
+  daidalos = host;
+}

modules/hosts/daidalos/disko.nix

@@ -0,0 +1,116 @@
+{ installDisk, ... }:
+{
+  disko.devices = {
+    disk.main = {
+      type = "disk";
+      device = installDisk;
+      content = {
+        type = "gpt";
+        partitions = {
+          firmware = {
+            label = "FIRMWARE";
+            size = "1G";
+            type = "0700";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot/firmware";
+              mountOptions = [ "umask=0077" ];
+            };
+          };
+
+          zfs = {
+            label = "zfs";
+            size = "100%";
+            content = {
+              type = "zfs";
+              pool = "rpool";
+            };
+          };
+        };
+      };
+    };
+
+    zpool.rpool = {
+      type = "zpool";
+
+      options = {
+        ashift = "12";
+        autotrim = "on";
+      };
+
+      rootFsOptions = {
+        acltype = "posixacl";
+        atime = "off";
+        compression = "lz4";
+        dnodesize = "auto";
+        mountpoint = "none";
+        xattr = "sa";
+      };
+
+      datasets = {
+        root = {
+          type = "zfs_fs";
+          options.mountpoint = "none";
+        };
+
+        "root/nixos" = {
+          type = "zfs_fs";
+          mountpoint = "/";
+          options = {
+            canmount = "noauto";
+            mountpoint = "legacy";
+          };
+          postCreateHook = ''
+            zfs list -t snapshot -H -o name | grep -E '^rpool/root/nixos@blank$' \
+              || zfs snapshot rpool/root/nixos@blank
+          '';
+        };
+
+        home = {
+          type = "zfs_fs";
+          mountpoint = "/home";
+          options.mountpoint = "legacy";
+        };
+
+        nix = {
+          type = "zfs_fs";
+          mountpoint = "/nix";
+          options = {
+            mountpoint = "legacy";
+            "com.sun:auto-snapshot" = "false";
+            primarycache = "metadata";
+          };
+        };
+
+        persist = {
+          type = "zfs_fs";
+          mountpoint = "/persist";
+          options.mountpoint = "legacy";
+        };
+
+        var = {
+          type = "zfs_fs";
+          options.mountpoint = "none";
+        };
+
+        "var/log" = {
+          type = "zfs_fs";
+          mountpoint = "/var/log";
+          options.mountpoint = "legacy";
+        };
+
+        "var/lib" = {
+          type = "zfs_fs";
+          mountpoint = "/var/lib";
+          options.mountpoint = "legacy";
+        };
+
+        reserved = {
+          type = "zfs_volume";
+          size = "1G";
+        };
+      };
+    };
+  };
+}

modules/hosts/daidalos/hardware.nix

@@ -0,0 +1,20 @@
+{ lib, modulesPath, ... }:
+{
+  imports = [
+    (modulesPath + "/installer/scan/not-detected.nix")
+  ];
+
+  boot.initrd.availableKernelModules = [
+    "pcie_brcmstb"
+    "reset-raspberrypi"
+    "usbhid"
+    "usb_storage"
+    "vc4"
+    "xhci_pci"
+  ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  nixpkgs.hostPlatform = lib.mkDefault "aarch64-linux";
+}